Brake lining tool



E. H. PETERSON ET AL 1,872,493

BRAKE LINING TOOL Aug. 16, 1932.

Filed Aug. 22, 1930 @ggf v Patented Aug. 16, 1932 UNITED STATES PATENT 01=11v|3y EDWARD HENRY PETERSON AND WILLIAMIH. ODLUM, OF

CHICAGO, ILLINOIS, AssIciN7 ORS TO DURO 'METAL PRODUCTS COMPANY, OF CHICAGO, ILLINOIS, CORPORATION OF ILLINOIS BRAKE YLINING TooI.

Application led August 22,` 1930. i Serial .No.'477,177.

rli'he present invention relates to brake lin-V ingtools and is particularly concerned with tools for the purpose of drilling and countersinking brake linings, for relining the brakes of automotive vehicles or the like.

The tool is of general application, however, and is adapted to be used wherever it is desirable to other materials.- l

One of the objects of the present invention is the Aprovision of an improved hand tool for drilling and countersinking brake linings to facilitate the relining of brakes.

Another object isto provision vof a hand v tool'of the class described, which is simple and sturdy, and which may be very economically manufactured, thus placing the tool within the means of a large number of purchasers.

Another object is the provision of a` device of the class described, having 'an improved and simplified mechanism many of the parts drill is mounted for rotation and reciproca-- tion by hand, provision being made for force multiplying devicesv to. secure the desired drill pressure. y'

Other objectsand advantages of the invention will be apparent from the following description and from vthe accompanying drawing, in which similar characters of reference views.

lining tool constructed according to the present invention, with the parts. in the position drill and countersink linings or indicate similar parts throughout the several which they assume at the beginning of the drilling operation; l K Y `1 Fig.l 2 is an elevational vievvin partial section, Aon a lvertical plane showing the details' of the structure of the bearing forthe drill arborand the` actuating mechanism;

Fig.` 3 is an enlarged sectional View of the drill and pilot member vshown in'Fig. 2.- Referring to thedrawing, 10 indicates a lwork table bench or othervsupportinig member for the tool,`whichv is indicated in its entirety by the numeral 11, and which'is illustrated in connection with an ordinary brake band 12 to which a lining 13 is tobe secured.

The brake band 12 is usually provided with apertures 14 for the rivets which secure the lining 13 to the band, and the present toolis Aparticularly adapted to effect `the drilling and countersinking of thelining l3`providing apertures which are-in registration with the holes 14 in thebrake band v12. n

The tool 11 preferably includes ay supporting body 15 having an attaching fiange v16 which may be secured to the bench 10 by a plurality of screw bolts 17, or` otherconvenient fastening means.

The body is also preferably i provided with a downwardly extending flange 18 for 'engaging the forward edge lof the bench 10 and reinforcing the securement of the body 15 on bench 10 and the body ispreferably provided with a forwardly eXtendingwork supporting shoe 19. The worksupporting shoe-19 may is preferably tapered toward `its outer end 20, where it is provided with an upwardly projecting anvil 21 having an upper .flat surface 22 for engaging the rear side of the brake band 12, and the shoe 19 is preferably -provided with a vertically extending bore 23 for slidably receiving a pilot pin 24.

The pilot-pin24 comprises an elongated cylindrical member having a head` 25 and having a substantially frusto-conical tapered end 26. The end surface 27 may be substan- A tially flat or slightly V'concavefor receiving Referring tothesingle sheet of drawing l Fig. l is a view 1n perspective of a brake the end of the drill point 28, which is of substantially the same size or smaller than the be of any convenient shape, but

ably and rotatably mounting the drill arbor 32. The -body 15 preferably has afsubjstan-V tially Hat, laterally projecting liange 33 at the forward edge of its yoke, and therbody l5.. is preferably provided with a rearwardly and 1upwardly proj ecting' imlqcated with respect `to theiiange 33 and at right angles. tothe. Hnge y33, .thereby providwithl ,aj n iininium of weight and .materiaL A Irhel bearing 31p is preferably provided with a verticallyextending substantially cylindri- .I cal; bore aand with substantially Hat ,thrust 251 bearing; surfaces:36l andAv 37v at leach vend. YThe bere "35 rotatably LBS-.Whichjfis provided with., an axiallyrexi;tending` .boren 39, forvsllidably. supporting the l'lfhebearingsleeve ,38;maybe providedwith av thrust) hearing atits lower end, comprising a .CollarAO ,secured tol .the bearing sleeve Vby asetscrew 41fand at its upper end, thebear- "'ang,sleevej38i isreduced .in diameter; rto .form

.35,r annular `Vshoulder 42' and a,v reduced y,p ormg55 register with .gioA 'drilirpointiQS andY tion 43. "Lhebearing sleeve 38 is preferably .13150. .PrOYi'dedWi'Chfa'thrust bearing member flange-S 47 andi maintaining thekl crank 56 .in .proper .position on pin L64.

bearing 42 isalso preferably.. provided .with7 `threaded in-tof'the body-'ofthrust bearing 42 and .projeeted/v upward.- to-. engage `the crank leyer56. The lengthof the crank lever 56is preferablysuch Xthat-thecrank may bexrof ;tated inside anyordinary -band;12.-.so that crank1leverc=56 `does not-iin 44.;Which may comprise a. lsheet metal memfber'f-,ghztvingv a centrally located bore Y 45 for v.40 receiving .the lreducedportion, .43 of sleevey38.

"The thrust' bearing plate 42, iseecured. ion .d s leeye 38 by: turning over ,the 4endv ofsleeve i v38 1at'46 and the v.thrust bearing. .Plate 42is .p preferably provided with appair of upward- "flfhef adrillarbor?) 2 comprises a 'substantially l5 cylindrical metalmember of tool. steelior the like, which is'uforined at its lower endwith an annular enlargementl48, @which isl providedj .50 with an axial bore149 forming a socket `,for the tool,` indicated infits enf erablyhiprovided with a s et screw *shank* 50 withauidepression53f`adapted to Se?. Screw.. 52 when. the.. annular shoulder,54 on tool 51. is in engagementwith the -end of arbor32. i j 'The v15001151 preferably .consists of.a coinbined drill andcountersinkyforined withga with a countersink 55r ap y propriate for use in countersinking brake linl-`=ings13; the countersink 55 coming into play The4 enlargement 48 .fist-ypref- @brake lining toa snicient degree. Y

*The tool arbor $32 isr` preferably provided .fstockfmetal ture 57 at one end for receiving the reduced vyoke which supports aV y,vertically Y-, extending cylindrical L .bearing 31 for slidflange 34 centrall "c y' may be used to press the crank lever ward most conveniently and provide thedeinga supporting body Ofmaximum strength with an axially extending slot 68 at per end, of-f'sufficientwidthl toreceive the supports abearingsleevef fpre ferablyprovided with .vIt-shouldl-be understood'that a slotmay -eitherbe providedl at the rivet 64er the rivet 63 in order Vthat the crank lever -56 may; reciprocate tool arbor 32 tof feedl pin 64 is also preferably lwith force multiplying means for moving the arbor axially to secure the desired drill pressure and with a hand actuating device for rotating the combined drill and countersink, consisting of a crank lever 56. The crank lever 56 may consist of an elongated strip of which is provided with an aper- 'end' 58 of a crank pivot bolt 59. The crank ,p ivet bolt-rotatably l supports` aikngob v60 and .preferably riveted to crank lever 56 in suoli manner jthat theA knob :M -rotates freely.

The crank lever 56 is preferably provided witha,J ztwistlfbetween its ends so as to f` cause the knob l60 to extend upward, so that the-upper rounded' surface 62vo'f the knob 60 56 downsired tool-.pressure at the drill point 28. A, The drill a-rbor'-32 -is preferably' formed its upcrank lever 56,-which is Apreferably pivoted to the drill arbor 32,` by a rivet 63. 4Theup- -ward-lyextendingfiangesr 4T preferably supporta transverse lpin 64riv'eted overA on 'the VVoutsideof eachflange` for pivotally'supportaV slot 66.

ltheldrill and countersink. The .provided witha-pair-of spacers,y one on each fside .of crank `lever 56,' for Yengaging lthe The; .thrust an ,l adjustableV stop screw 68 conventional .brake terfere with ordinary` brake bands, and avery convenienty yet-simple actu aatin-g-l mechanism isl provided. -by the arrangementwhich was. il

21 with the pilot pin 24 projectingin onefof the apertures 14 inthe brake band, the .lining 13 havingbeen previously located inthe ,de-

4sired position on the band.- The .band will then -be heldwith its aperture .14 in. proper registrywith vthe drill point.28 andbypressf ing downward on the knob`60 and rotating thecrank56 atthesame time, thedrill point whenthe drill point ,28v has penetratedthe f 28!V maybe caused -to l.progress vthrough-g the sink carried by said arbor,

causes the drill arbor 32 to slide in its bearing sleeve 3S, the crank 56 exerting a downward pressure on arbor 38 and reacting upwardly against the pin 64. The thrust bearing 40 on the bearing sleeve 38 reacts against bearing 3l in order to permit crank lever 56 to feed the drill point 28 downward.

The crank 56 is secured to the bearing sleeve 28 at the pin 63 and the pin 64 so that crank 56 rotates the body 42, bearing sleeve 38 and drill arbor 42 and the excess length of crank 56 between knob 60 and pin 63 makes the crank a force multiplying device for exerting a considerable axial pressure on the tool 5l.

When the drill point 23 has penetrated lining 13 the drill point engages pilot pin 24 and 'the pilot pin 24 is forced downward against the pressure of leaf spring 29, which slidably engages head 25. The pilot pin 24 recedes sufficiently so that the countersink 55 is fed into engagement with the lining 13 and the lining 13 is appropriately countersunk at the same time by merely continuing the operation until crank lever 56 strikes the stop screw 68.

It will thus be observed that we have invented a very simple, yet efficient brake lining tool which may be very economically manufactured and assembled, but which is capable of use with ordinary brake bands and linings for drilling and countersinking the linings very expeditiously.

The present actuating mechanism is very simple, yet it is also very effective` and the tool may be manufactured in large quantities at a cost which brings it within the means of a vast number of purchasers, such as mechanics who operate on a small scale and cannot therefore afford to purchase expensive machinery.

Thile we have illustrated a preferred embodiment of our invention, many modifications may be made without departing from the spirit of the invention, and we do not wish to be limited to the precise details of construction set forth, but desire to avail ourselves of all changes within the scope of the appended claims.

Having thus described our invention, what we claim is new and desire to secure by Letters Patent of the United States, is:

l. In a brake lining tool, the combination of a supporting body having a work supporting foot and a bearing located above said foot, with a sleeve rotatably mounted in said bearing and provided with thrust bearings at each end of said sleeve to prevent its axial movement relative to the bearing, a tool supporting arbor slidably mounted in said sleeve and rotatable therewith, a crank having a pivot connection with said arbor and said sleeve for rotating and reciprocating said arbor, a combined drill and counterand a pilot pin slidably and resiliently mounted in said foot to be engaged and reciprocated by said drill.

2. In a brake lining tool, the combination of a supporting body having a work supporting foot and a bearing located above said foot, with a sleeve rotatably mounted in said bearing and provided with thrust bearings at each end of said sleeve, one of said thrust bearings having axially extending flanges, a pin carried by said flanges, a crank pivotally connected to said pin and to said arbor to rotate and reciprocate said arbor, an adjustable stop screw carried by said upper thrust bearing for engaging said crank and limiting its downward movement, said arbor having an axial bore and a set screw, and a combined drill and countersink secured in said bore by said set screw, a combined drill and countersink carried by said arbor, and a pilot pin slidably and resiliently mounted in said foot to be engaged and reciprocated by said drill, a head on the lower end of said in and a leaf spring for resiliently and slidably engaging said head, carried by said foot.

3. In a brake lining` tool the combination of a supporting head having a bearing with a sleeve rotatably mounted in said bearing, a bracket carried bythe upper end of said sleeve and having a pair of upwardly extending flanges, a pivot pin carried by said flanges, an arbor slidably mounted in said sleeve and having a slot in its upper end, a combined drill and countersink carried by said arbor, a crank arm pivotally connected to said arbor in said slot and having a pivotal and sliding connection with said pin whereby said combined drill and countersink may be rotated and forced downward by means of said crank, a foot carried by said head for supporting a kbrake band, and a resiliently mounted pilot pin in said foot.

4. In a brake lining tool the combination of a body member having a bearing with a. sleeve journaled therein and held against axial movement relative to its bearing, a tool supporting mandrel reciprocably mounted in said sleeve, a lever pivoted intermediate its ends to the upper end of said mandrel thereby to provide for rotation and reciprocation of the mandrel, a bracket secured to the upper end of said sleeve and having a pair of spaced vertically extending flanges, a pin, projecting through an aperture in one end of said lever, and having its ends secured to said flanges, and an adjustable stop screw carried by said bracket for engaging said lever to limit the downward movement of said mandrel.

In witness whereof, we hereunto subscribe our names this 15th day of August, 1930.

EDWARD HENRY PETERSON. WILLIAM I-I. ODLUM. 

